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71 lines
2.7 KiB
C++
71 lines
2.7 KiB
C++
// Copyright (c) 2016 The Chromium Embedded Framework Authors. All rights
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// reserved. Use of this source code is governed by a BSD-style license that
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// can be found in the LICENSE file.
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#ifndef CEF_TESTS_SHARED_BROWSER_MAIN_MESSAGE_LOOP_EXTERNAL_PUMP_H_
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#define CEF_TESTS_SHARED_BROWSER_MAIN_MESSAGE_LOOP_EXTERNAL_PUMP_H_
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#pragma once
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#include "tests/shared/browser/main_message_loop_std.h"
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namespace client {
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// This MessageLoop implementation simulates the embedding of CEF into an
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// existing host application that runs its own message loop. The scheduling
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// implementation provided by this class is very simplistic and does not handle
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// all cases (for example, nested message loops on Windows will not function
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// correctly). See comments in Chromium's platform-specific
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// base/message_loop/message_pump_* source files for additional guidance when
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// implementing CefBrowserProcessHandler::OnScheduleMessagePumpWork() in your
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// application. Run cefclient or ceftests with the
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// "--external-message-pump" command-line flag to test this mode.
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class MainMessageLoopExternalPump : public MainMessageLoopStd {
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public:
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// Creates the singleton instance of this object. Must be called on the main
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// application thread.
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static scoped_ptr<MainMessageLoopExternalPump> Create();
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// Returns the singleton instance of this object. Safe to call from any
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// thread.
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static MainMessageLoopExternalPump* Get();
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// Called from CefBrowserProcessHandler::OnScheduleMessagePumpWork() on any
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// thread. The platform subclass must implement this method and schedule a
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// call to OnScheduleWork() on the main application thread.
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virtual void OnScheduleMessagePumpWork(int64 delay_ms) = 0;
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protected:
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// Only allow deletion via scoped_ptr.
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friend struct base::DefaultDeleter<MainMessageLoopExternalPump>;
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// Construct and destruct this object on the main application thread.
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MainMessageLoopExternalPump();
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~MainMessageLoopExternalPump();
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// The platform subclass calls this method on the main application thread in
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// response to the OnScheduleMessagePumpWork() call.
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void OnScheduleWork(int64 delay_ms);
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// The platform subclass calls this method on the main application thread when
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// the pending work timer times out.
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void OnTimerTimeout();
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// Control the pending work timer in the platform subclass. Only called on
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// the main application thread.
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virtual void SetTimer(int64 delay_ms) = 0;
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virtual void KillTimer() = 0;
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virtual bool IsTimerPending() = 0;
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private:
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// Handle work processing.
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void DoWork();
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bool PerformMessageLoopWork();
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bool is_active_;
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bool reentrancy_detected_;
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};
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} // namespace client
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#endif // CEF_TESTS_SHARED_BROWSER_MAIN_MESSAGE_LOOP_EXTERNAL_PUMP_H_
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